Sikkimese (འབྲས་ལྗོངས་སྐད་)

Sikkimese is a Southern Tibetic language spoken by the Bhutia
(Denzongpa) people in Sikkim. It is also known as Sikkimese Tibetan,
Bhutia, Dranjongke (འབྲས་ལྗོངས་སྐད་),
Dranjoke, Denjongka, Denzongpeke or Denzongke, and has about
70,300 speakers

Sikkimese is closely related Dzongkha and there is some mutual
intelligibility between them. It is less closely related to Tibetan,
though many Sikkimese speakers also speak Tibetan, as well as Nepali.

Sikkimese is written with the Tibetan alphabet and about two thirds
of Sikkimese speakers are literate in their language.